#coding=utf8
import os
import mapnik
from utilities import execution_path
from nose.tools import *

def setup():
    # All of the paths used are relative, if we run the tests
    # from another directory we need to chdir()
    os.chdir(execution_path('.'))

@raises(RuntimeError)
def test_zoom_all_will_fail():
    m = mapnik.Map(512,512)
    mapnik.load_map(m,'../data/good_maps/wgs842merc_reprojection.xml')
    m.zoom_all()

def test_zoom_all_will_work_with_max_extent():
    m = mapnik.Map(512,512)
    mapnik.load_map(m,'../data/good_maps/wgs842merc_reprojection.xml')
    merc_bounds = mapnik.Box2d(-20037508.34,-20037508.34,20037508.34,20037508.34)
    m.maximum_extent = merc_bounds
    m.zoom_all()
    eq_(m.envelope(),merc_bounds)

    m = mapnik.Map(512,512)
    mapnik.load_map(m,'../data/good_maps/wgs842merc_reprojection.xml')
    merc_bounds = mapnik.Box2d(-20037508.34,-20037508.34,20037508.34,20037508.34)
    m.zoom_to_box(merc_bounds)
    eq_(m.envelope(),merc_bounds)
    
    
def test_visual_zoom_all_rendering1():
    m = mapnik.Map(512,512)
    mapnik.load_map(m,'../data/good_maps/wgs842merc_reprojection.xml')
    merc_bounds = mapnik.Box2d(-20037508.34,-20037508.34,20037508.34,20037508.34)
    m.maximum_extent = merc_bounds
    m.zoom_all()
    im = mapnik.Image(512,512)
    mapnik.render(m,im)
    actual = '/tmp/mapnik-wgs842merc-reprojection-render.png'
    expected = 'images/support/mapnik-wgs842merc-reprojection-render.png'
    im.save(actual)
    expected_im = mapnik.Image.open(expected)
    eq_(im.tostring(),expected_im.tostring(), 'failed comparing actual (%s) and expected (%s)' % (actual,'tests/python_tests/'+ expected))

def test_visual_zoom_all_rendering2():
    m = mapnik.Map(512,512)
    mapnik.load_map(m,'../data/good_maps/merc2wgs84_reprojection.xml')
    m.zoom_all()
    im = mapnik.Image(512,512)
    mapnik.render(m,im)
    actual = '/tmp/mapnik-merc2wgs84-reprojection-render.png'
    expected = 'images/support/mapnik-merc2wgs84-reprojection-render.png'
    im.save(actual)
    expected_im = mapnik.Image.open(expected)
    eq_(im.tostring(),expected_im.tostring(), 'failed comparing actual (%s) and expected (%s)' % (actual,'tests/python_tests/'+ expected))

# maximum-extent read from map.xml
def test_visual_zoom_all_rendering3():
    m = mapnik.Map(512,512)
    mapnik.load_map(m,'../data/good_maps/bounds_clipping.xml')
    m.zoom_all()
    im = mapnik.Image(512,512)
    mapnik.render(m,im)
    actual = '/tmp/mapnik-merc2merc-reprojection-render1.png'
    expected = 'images/support/mapnik-merc2merc-reprojection-render1.png'
    im.save(actual)
    expected_im = mapnik.Image.open(expected)
    eq_(im.tostring(),expected_im.tostring(), 'failed comparing actual (%s) and expected (%s)' % (actual,'tests/python_tests/'+ expected))

# no maximum-extent
def test_visual_zoom_all_rendering4():
    m = mapnik.Map(512,512)
    mapnik.load_map(m,'../data/good_maps/bounds_clipping.xml')
    m.maximum_extent = None
    m.zoom_all()
    im = mapnik.Image(512,512)
    mapnik.render(m,im)
    actual = '/tmp/mapnik-merc2merc-reprojection-render2.png'
    expected = 'images/support/mapnik-merc2merc-reprojection-render2.png'
    im.save(actual)
    expected_im = mapnik.Image.open(expected)
    eq_(im.tostring(),expected_im.tostring(), 'failed comparing actual (%s) and expected (%s)' % (actual,'tests/python_tests/'+ expected))

if __name__ == "__main__":
    setup()
    [eval(run)() for run in dir() if 'test_' in run]
